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CVE-2020-26556

7.5 · HIGH

Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioni…

Published May 24, 2021CWE-307EPSS 0.91%

Overview

CVE-2020-26556 is a high-severity vulnerability. It was published on May 24, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioning procedure times out, to complete authentication by leveraging Malleable Commitment.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refkb.cert.org/vuls/id/799380Refwww.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/Refwww.kb.cert.org/vuls/id/799380Refkb.cert.org/vuls/id/799380Refwww.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/Refwww.kb.cert.org/vuls/id/799380

How CyberStrike helps

Frequently asked questions

What is CVE-2020-26556?

CVE-2020-26556 is a high-severity vulnerability. It was published on May 24, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-26556?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-26556?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-26556?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-26556 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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